关键词: 制动器, 热衰退, ANSYS, 散热

Abstract: The brake is an important part of the car, which plays the functions of deceleration, braking and parking. Disc brakes are widely used in passenger cars and commercial vehicles because of their excellent braking performance. In response to the thermal degradation of braking performance, using ANSYS software, establish a finite element model of the disc brake, based on the theoretical analysis of thermodynamics, conduct thermal-structure coupled analysis, obtain the temperature change diagram of the brake at different braking moments. It is concluded that by optimizing the air duct form of the ventilated brake disc or adding small holes on the brake disc surface, it can improve the heat dissipation problem of the brake disc, and has practical guiding significance for improving the active safety of the car.

Key words: Brake, Thermal degradation, ANSYS, Heat dissipation